package net.zwj.security;

import java.util.Collection;
import java.util.Iterator;

import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;

public class MyAccessDecisionManager implements AccessDecisionManager {

	@Override
	public void decide(Authentication authentication, Object object,
			Collection<ConfigAttribute> configAttributes) throws AccessDeniedException,
			InsufficientAuthenticationException {
		if(configAttributes==null){
			return;
		}
		
		System.out.println(object.toString());
		
		Iterator<ConfigAttribute> ite = configAttributes.iterator();
		while(ite.hasNext()){
			ConfigAttribute ca = ite.next();
			String needRole = ((SecurityConfig)ca).getAttribute();
			for(GrantedAuthority ga:authentication.getAuthorities()){
				if(needRole.equals(ga.getAuthority())){
					return ;
				}
			}
		}
		throw new AccessDeniedException("no right!");
	}

	@Override
	public boolean supports(ConfigAttribute arg0) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public boolean supports(Class<?> arg0) {
		// TODO Auto-generated method stub
		return true;
	}

}
